Mindanao is bad, in my opinion, for the following reasons. And please understand that Mindanao aesthetically is my favorite map, I LOVE flying in it, just hate the gameplay at times.
1. Too congested. There just isnt enough room for 400 players on this map. Since almost 1/2 of the Western countries fields will never be touched, that puts 400 players pretty much in the center circle. Thats a lot of folks with not a lot of room. All this presents is nasty furballs and incredulous numbers. Now understand I think this is a BLAST IF it lasts for a couple days or so like the other maps. The problem is mindanao is the hardest map for some reason to reset ... and well, we get stuck on it for ten days.
2. No GV spawn points. Ground Vehicles play NO role in Mindanao. This gets old after a prolonged period of time as well. Again, if this map were reset quickly (within a couple days) - this would not be a problem.
3. We just get stuck on it too long. I like the Isles terrain, love it in fact. But it used to be one of my less favorites. Why? Because we were on it too long. Now, because we get it at most for 2-4 days, I really look forward to it. Same with the Lake.
Leph, I suspect the reason you like it and it has not grown to bother you is because you arent flying as much as you used to. If you flew everyday, and had to get stuck in Mindanao for ten days, I bet your feelings might change. I dunno though

It is an awfully beautiful terrain!
Nim
PS
I agree, lets change the rotation and get things staggered a bit.